11-25
11 Programming Devices and Communications
CJ2 CPU Unit Software User’s Manual
11-2 Serial Communications
11
11-2-1 Overview of Serial Communications
Example: Polling Unit Link Method, Highest Unit Number: 3
In the following diagram, polled unit 2 is a Unit not present in the network or a PT, so this data is
unstable in the Polling Unit.
Polling Unit
Send words
Send words
Polled Unit 0
Polled Unit 1
Unstable
Polled Unit 3
Not used.
Not used.
Not used.
Not used.
Not used.
Polling Unit
Polled Unit 0
Send words
Polled Unit 3
Polling Unit
Send words
Polled Unit 1
Polling Unit
Not used.
Not used.
Not used.
Not used.
Not used.
Not used.
Not used.
Not used.
Not used.
Not used.
Not used.
Not used.
Not used.
Not used.
Not used.
Not used.
Not used.
Not used.
Not used.
Not used.
To Next Page
Loading...
